/*************************************************************************
    > File Name: mycmd.c
    > Author: 茉莉玫瑰花茶
    > Mail: 19835250658@163.com 
    > Created Time: Fri 11 Jul 2025 10:28:01 PM CST
 ************************************************************************/

#include<stdio.h>
#include<unistd.h>

int flag = 0;

int Sum(int s, int e)
{
	int result = 0;
	for(int i=s;i<=e;++i)
	{
		result+=i;
	}
	return result*flag;
}

int main()
{
	int start = 1;
	int end = 100;
	printf("I will begin\n");
	int n = Sum(1,100);
	sleep(1);
	printf("Running Done! result is: [%d-%d] = %d\n", start, end, n);
	return 0;
}
